Disabled ThrowableAggregator.

Even though everyone else doesn't like too much log verbosity, Jarek
thrives on it. Added code to disable the ThrowableAggregator, which
means individual exceptions are logged, and turned it on for him.
Restored to sane logging levels.

These changes can easily be uncommented for Jarek diagnoses, but this
commit will stop the logs going bananas.
Added build info to WAR and webapp <head> metadata.
Merge branch 'master' of https://github.com/PTIPS/onebusaway-application-modules.git